Seismic response analysis and distribution prediction of source rocks in a survey of the South China Sea

Author:

Jia Weihua1ORCID,Zong Zhaoyun2ORCID,Sun Hongchao1ORCID,Lan Tianjun1ORCID

Affiliation:

1. China University of Petroleum (East China), School of Geosciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China; and Shandong Provincial Key Laboratory of Deep Oil and Gas, Qingdao, China.

2. China University of Petroleum (East China), School of Geosciences, Qingdao, China; Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China; and Shandong Provincial Key Laboratory of Deep Oil and Gas, Qingdao, China. (corresponding author)

Abstract

Identification and prediction of high-quality source rocks is the key to obtaining new resources in the exploration area of Cenozoic basins in offshore China. We research the seismic response and distribution of hydrocarbon source rocks using seismic data, well curves, lithologic interpretation, and geochemical analysis. The target is the source rock development zone of the W Formation in a survey of the South China Sea. The results show that the seismic response of thick layer source rocks differ from surrounding rocks in the seismic profile (strong reflections with opposite polarity at the top and bottom and messy or chaotic reflections inside). Seismic reflections of interlayer source rocks have the characteristics of low frequency and continuous strong amplitude. The dominant frequency and maximum amplitude decrease as the number of mudstone layers increases. Through seismic petrophysical analysis, we have obtained three sensitive parameters of source rock in this survey: clay content, P-wave impedance, and elastic impedance. Different classification methods can realize the classification and prediction of hydrocarbon source rocks, among which the Kernel Fisher discriminant analysis method is the best. The prediction results are consistent with the geological background, geochemical information, and well curves.

Funder

Ministry of Science and Technology of China

National Natural Science Foundation of China

Colleges of Shandong province

Innovation and Technology Support Program for Young Scientists

Publisher

Society of Exploration Geophysicists

Subject

Geology,Geophysics

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3